1 to 25 of 33 Legacy Systems Jobs in East London

technologies Ability to recommend solutions to improve new and existing database systems. Assess data implementation procedures to ensure they comply with internal and external regulations. Install and organize information systems to guarantee functionality. Prepare accurate database design and architecture reports for management and executive teams. Oversee the migration of data from legacy systems to new solutions. … Educate staff members through training and individual support. Offer support by responding to system problems in a timely manner. Requirements: Strong knowledge of database structure systems and data mining. Knowledge of systems development, including system development life cycle, project management approaches and requirements, design and testing techniques Proficiency in data modeling and design, including SQL development and database More ❯

technologies. Ability to recommend solutions to improve new and existing database systems. Assess data implementation procedures to ensure they comply with internal and external regulations. Install and organize information systems to guarantee functionality. Prepare accurate database design and architecture reports for management and executive teams. Oversee the migration of data from legacy systems to new solutions. … Educate staff members through training and individual support. Offer support by responding to system problems in a timely manner. Qualifications : Strong knowledge of database structure systems and data mining. Knowledge of systems development, including system development life cycle, project management approaches and requirements, design and testing techniques. Proficiency in data modeling and design, including SQL development and database More ❯

the day-to-day operation of the CRM platform, ensuring seamless functionality and troubleshooting issues. Support system integrations and monitor application performance. Manage data migration from Legacy systems, ensuring accuracy and integrity. Collaborate with Investment Bankers, Operations, Business Support, and IT teams to tailor DealCloud to business needs. Drive a modern IT Change & Release process for the More ❯

functionalities and integrations within Endur. Provide training and support to end-users to ensure efficient use of the platform. Assist in migrating data and transitioning from legacy systems to Endur. Collaborate with project managers and IT teams to deliver projects on time and within budget. Stay updated with the latest updates and features of the Endur platform. More ❯

an experienced Data Analyst to join a high-impact digital transformation project within a secure government environment. This role focuses on the consolidation and migration of legacy systems into a new, centralised ERP platform . You’ll play a key role in mapping, transforming, and validating large datasets across multiple departments, ensuring data integrity and compliance throughout … the migration lifecycle. Key Responsibilities: Analyse and profile data across legacy systems to understand current data structures and quality Work closely with business users and technical teams to define and document data requirements Support data mapping, transformation, and cleansing processes to prepare for ERP migration Identify data inconsistencies, risks, and remediation strategies Build data validation rules and … Analyst on ERP or large-scale system migration projects ✅ Strong SQL skills and familiarity with Excel, Power BI or other data visualisation tools ✅ Experience working with legacy systems and integrating into modern ERP platforms (e.g., Oracle, SAP, Workday, Unit4, etc.) ✅ Knowledge of data governance and data quality best practices ✅ Excellent communication and stakeholder engagement skills ✅ Active SC More ❯

customers, and global teams (including a team in Bulgaria) Own and influence technical design, architecture, and best practices Support and develop engineers through mentoring and technical guidance Balance legacy system understanding with innovation in new platforms Work closely with stakeholders across engineering, product, and leadership Tech Stack Backend: .NET Core 8/9, Azure Cloud Frontend: React, Typescript … Experience working on a SaaS product Team Setup UK Engineering Team: 5 engineers (plus a team of contractors), with plans to grow Bulgaria Team: 7 engineers (focused on legacy product support) DevOps: Small, cross-functional team supporting all projects Salary & Benefits: Competitive base salary: up to £130,000 Bonus 10-15% Private healthcare coverage Company pension scheme More ❯

design patterns API Development Building and maintaining RESTful APIs Solid understanding of HTTP protocols, status codes, headers, etc. API documentation using tools like Swagger/OpenAPI Legacy Systems Exposure to or experience with WCF services — we still support some older systems, so comfort working with a mix of modern and legacy tech is key More ❯

and monitoring Clear communicator, comfortable with cross-functional teams Desirable Experience APIs from major financial data providers dbt, Snowflake Kafka, Airflow Java feedhandler support Migration of legacy systems (e.g. MATLAB) This position offers a competitive compensation package and hybrid working model. More ❯

This permanent role based onsite in central London (5 days a week), offers the chance to work shoulder-to-shoulder with a world-class team on complex, secure SaaS systems powering global enterprises. As a Senior Backend Engineer, you’ll play a key role in designing and building greenfield backend services using Java and Spring Boot , with a strong … direction , lead by example in code quality, and champion best practices across the team. You’ll be working on the core of next-gen cybersecurity products, including enterprise-grade systems built from the ground up . With a focus on innovation and engineering excellence, this role offers real technical ownership and the chance to make architectural decisions that scale … to grow fast, work on meaningful problems, and expand your skills in a technically rich environment . If you're looking to elevate your career, build secure and scalable systems, and play a key role in a global product roadmap , we want to hear from you. Responsibilities: Design, develop, and maintain Java-based backend services using Spring Boot, REST More ❯

As the Enterprise Security Architect, you’ll own the definition and implementation of enterprise-wide security architecture. You’ll be responsible for designing strategies and frameworks that secure critical systems and services, spanning both on-premise and cloud environments. You’ll also play a hands-on leadership role in mentoring solution and technical architects, ensuring security is a foundational … business and technology strategies into security-focused architecture patterns Design and maintain conceptual and logical security architectures across multiple technology domains Support secure delivery of cloud and on-premise systems (Oracle, Microsoft, Salesforce, MuleSoft) Guide solution and technical architects on security principles, best practices, and assurance Contribute to architecture governance, standards, and documentation Partner with product, digital, data, finance … an Enterprise or Security Architect in complex environments Strong understanding of enterprise security frameworks, governance, and risk management Experience delivering secure architectures in cloud, hybrid, and legacy systems Hands-on knowledge of modelling tools and frameworks (UML, ArchiMate, Bizz design ideal) Broad technical knowledge across infrastructure, data, CRM, HR, and finance systems Strong communication and stakeholder More ❯

this role is to facilitate the seamless, efficient, and effective migration of applications from the current technology stack to a modernized platform. This includes upgrades to the latest operating systems, database versions, and associated infrastructure components. The role is pivotal in ensuring that the migration process is technically sound, strategically aligned, and executed with minimal disruption to business operations. … versatile Technical Scrum Master with deep expertise in Agile methodologies to support a major application migration initiative. This role is essential in driving the transformation of legacy systems into a modern, scalable, and secure technology environment. The ideal candidate will be an experienced professional who is comfortable working in close partnership with a diverse range of global … to the Software Development Life Cycle (SDLC). The role contributes directly to the execution of the IT Strategy, supports revenue-generating and regulatory initiatives, and ensures that IT systems provide a competitive edge. Additionally, the role actively promotes Diversity and Inclusion across all aspects of the development lifecycle and team dynamics. Position Description Lead and manage Agile scrums More ❯

twentyAI are partnering with a globally renowned law firm currently undergoing a major digital and data transformation. With a deep-rooted legacy in legal excellence and a strong global footprint, the firm is currently modernising their data capability and building a new data platform. About the Role You will be part of a diverse group of engineers and … adopting best practices and integrating security controls in pipelines. Identify bottlenecks and optimise performance across data pipelines and cloud infrastructure. Participate in the ongoing migration from legacy systems to modern data platforms. Your Background Experience with Microsoft Azure data tools — especially Data Factory and Synapse. Familiarity with Microsoft Fabric will be beneficial. Otherwise, experience with platforms like …/CD pipelines in a data engineering context. Practical knowledge of distributed processing frameworks, particularly Spark. Comfortable working in a complex environment that is evolving from legacy systems toward a modern data architecture. Strong problem-solving skills and the ability to work collaboratively in a cross-functional agile team. Exposure to data governance, security, and compliance principles More ❯

data platforms, web services, and custom APIs. This is a hands-on technical role ideal for someone who thrives in complex environments and enjoys solving integration puzzles across legacy and modern systems. What You'll Be Doing: • Design, build, and maintain system integrations using .NET, SQL Server, and low-code platforms • Develop and optimise SQL queries, stored procedures More ❯

and delivery methodologies (Agile, Waterfall, hybrid approaches). Excellent documentation and planning skills – able to clearly articulate requirements, scope, and deliverables. Experience in environments transitioning from legacy systems or mixed technology landscapes. Desirable Qualifications Microsoft certifications in SharePoint or related technologies. Formal project management qualifications (e.g. PRINCE2, PMP, AgilePM). Experience working within regulated industries or with More ❯

and data residency requirements. Oversee the planning and execution of phased migration strategies, including early delivery of decoupled processes to reduce risk. Implement replacement solutions for legacy systems (e.g., fax, voice recording, application access). Act as business lead for final migration phases, managing detailed plans from analysis through to operational readiness and go-live. Coordinate cross More ❯

graduated and eager to dive into the world of high-performance tech and quantitative finance? Join a leading global trading firm where innovation is key — no legacy systems, no bureaucracy, just a fast-paced, intellectually stimulating environment designed for growth. With unlimited access to cutting-edge technology and mentorship from top-tier engineers and quants, you’ll … have the opportunity to contribute to high-impact projects, shaping the future of trading tech. What You’ll Be Doing Develop and enhance state-of-the-art trading systems and infrastructure Design and implement your own quantitative models Collaborate with top engineers, quants, and researchers to tackle complex challenges Learn rapidly and grow within a firm that thrives on … greenfield projects from day one — your contributions have real impact Collaborate with some of the brightest minds in both tech and finance Access to top-of-the-line tools, systems, and infrastructure Unmatched career growth in a high-performance, meritocratic culture Apply now or reach out directly: obloom@hunterbond.com More ❯

inside IR35 (gross umbrella rate) We’re working with a major financial institution looking to scale out its engineering function with a Principal Java Developer to lead critical systems work. This is a hands-on Principal role requiring an experienced engineer with a finance background to come in and stabilise an existing platform. This Java-based stabilisation/rescue … also involves guiding CI/CD improvements, REST API design, and steering collaborative technical decisions across squads. What they’re looking for: Proven experience supporting large-scale, business-critical systems in the finance industry (all areas of finance considered) Strong background in Java and ideally C# Some front-end exposure in Angular - this is mandatory, but doesn't need … to be recent or extensive Comfortable working with legacy systems and large enterprise environments Confident in leading technical conversations across multiple engineering disciplines Experience with CI/CD pipelines and modern deployment practices REST API design This is a great opportunity for an experienced Java Developer to join a prestigious financial player. If you’re someone who More ❯

to drive continuous improvement. Develop and maintain Power BI dashboards to deliver insights on office occupancy, forecasts, and time recording. Create productivity tools using Power Apps to replace legacy systems. Coordinate the quarterly corporate risk review: chair working-level meetings, challenge risk scoring, ensure directorates update risk registers, maintain the corporate risk register in Power BI, and escalate More ❯

based team. This is a full-time, permanent position , based fully onsite in central London 5 days a week , offering a unique opportunity to take ownership of core backend systems that power a world-class security platform . In this role, you’ll be instrumental in designing, building, and optimising high-availability backend services that underpin critical cybersecurity capabilities … while also bringing technical leadership to the team. Operating at scale, you're work will have a huge impact on systems used by major enterprises and governments worldwide . You’ll work hands-on with a sophisticated tech stack including Java , Spring Boot and more . You’ll lead initiatives to enhance existing platforms while working on greenfield projects …/CD, cloud infrastructure (AWS/GCP/Azure). Strong grasp of software security principles, system performance optimisation, and infrastructure reliability. Experience working on large-scale, production-grade systems with distributed architectures. Nice to Have: Exposure to tools like Elasticsearch/Kibana, Hadoop/HBase, OpenSearch, or VPN/proxy architectures. Ideal Candidate will: Bring technical vision, initiative More ❯

record in SAP Data Migration projects * Technical skills in ABAP programming or SAP Data Services * Ability to work with SAP tables, data structures, and transactions * Understanding of both legacy and target system integration * Strong analytical and problem-solving skills * Open to learning and adopting new data tools and technologies Additional Information: * The role can be based in one More ❯

successful delivery of diverse software projects. This can range from product enhancements to new platform development. Projects may include: ✔️Building identity verification software ✔️ Upgrading and modernising legacy systems ✔️ Developing new client-facing digital products You’ll also work closely with client teams and stakeholders to align delivery with business outcomes. Why should you apply though? You'll More ❯

advice to system users across multiple departments Advising on best practice use of the system to improve user efficiency and data quality Supporting the transition from legacy systems and helping embed the new solution Leading your own workstreams and contributing to a positive change culture Collaborating across business areas to identify user needs and training gaps What … Project has the following core elements: Implementation of the new system and the build of its core processes, data, and automation Data Cleanse and Migration of Data from existing systems to the new system Integration with an extensive portfolio of existing student applications Provision of new reports, student communications, and staff/student online portals Business Change and Transformation … associated with new processes and student journeys Why Join? Impact : Be at the heart of a critical digital transformation Autonomy : Own your workstreams and influence how systems are adopted Flexibility : 100% remote working opportunities. Benefits : October 2026- FTC with potential for an extension, university pension (15.5%) & generous leave package (30 days + Bank Holidays and Closure days over Christmas More ❯

reality. We’re an early-stage fintech startup, backed by industry insiders, with deep experience in the financial ecosystem. We’re building from zero—no tech debt, no legacy systems. Just a clean slate, strong vision, and higher standards. Now we’re looking for a founding backend engineer to join us at the ground level and help bring … high-trust environment with real autonomy About You You work incredibly hard, really care about your work and take pride in what you do You ship clean code, scalable systems, and solving complex problems elegantly. You’re excited by ownership and unafraid of ambiguity. You move fast, but with precision. You use AI tools to design, code, debug, and … ship faster, not just as a nice-to-have but a MUST-have force multiplier What we're after: 3+ years experience building backend systems and APIs in C#/.NET Strong grasp of architecture patterns: DDD, CQRS, microservices Experience writing clean, testable code with a TDD mindset Experience working in small teams or startups, where autonomy and speed More ❯

system. Key Responsibilities of the Interim Procurement Officer include: Develop a contract management approach for the ERP programme, ensuring alignment of IT contracts with ERP delivery timelines Support legacy system decommissioning by reviewing contract registers and liaising with contract owners to ensure compliance Draft Gateway 2 reports across various procurement lots for review by the Procurement Lead Prepare More ❯

Lead the design, development, and implementation of SharePoint Online solutions tailored to individual business unit requirements. Manage and execute the migration of multiple business units from legacy systems or existing environments into the new SharePoint Online platform. Collaborate with stakeholders to gather requirements and translate business needs into SharePoint functionality. Provide technical leadership and hands-on configuration More ❯